. >> investigating the investigators with our panel, representatives bennie thompson, marsha blackburn, debbie wasserman schultz and jason chaffetz. and the president headlines the white house correspondents' dinner. >> i've got 99 problems and now jay-z's one. >>> i'm candy crowley and this is "state of the union." first we want to go to the latest on the boston bombings investigation. a u.s. official says russia wiretapped a 2011 conversation between the mother of one of the accused boston bombers and someone who may have been one of her sons discussing jihad. russia turned over the information to the fbi within the last few days. meantime, the fbi has wrapped up its search of a landfill near boston. investigators were looking for a laptop supposedly used by bombing suspect dzhokhar tsarnaev. it is believed the computer could hold information about the planning of the attack. the obama administration is defending the decision to inform the surviving suspect of his miranda rights. attorney general eric holder spoke with cnn last night. >> the decision to mirandize is one that the magi